Wireless communication method and user equipment

Abstract

A wireless communication method applied in a User Equipment (UE) includes: detecting a first Downlink Control Information (DCI) format; receiving a first Physical Downlink Shared CHannel (PDSCH) scheduled by the first DCI format; detecting a second DCI format, the second DCI format being detected after the first DCI format; receiving a second PDSCH, the second PDSCH being received after the first PDSCH; and transmitting Hybrid Automatic Repeat request-ACKnowledgement (HARQ-ACK) information corresponding to the first PDSCH in a Physical Uplink Control CHannel (PUCCH) or a Physical Uplink Shared CHannel (PUSCH) in a first slot indicated by the second DCI format.

1 . A wireless communication method applied in a User Equipment (UE), comprising: 
 detecting a first Downlink Control Information (DCI) format;   receiving a first Physical Downlink Shared CHannel (PDSCH) scheduled by the first DCI format;   detecting a second DCI format, the second DCI format being detected after the first DCI format;   receiving a second PDSCH, the second PDSCH being received after the first PDSCH; and   transmitting Hybrid Automatic Repeat request-ACKnowledgement (HARQ-ACK) information corresponding to the first PDSCH in a Physical Uplink Control CHannel (PUCCH) or a Physical Uplink Shared CHannel (PUSCH) in a first slot indicated by the second DCI format.   
     
     
         2 . The wireless communication method according to  claim 1 , further comprising:
 transmitting HARQ-ACK information corresponding to the second PDSCH in a second slot,   wherein the first slot is not later than the second slot.   
     
     
         3 . The wireless communication method according to  claim 2 , wherein the second DCI format comprises a PDSCH-to-HARQ_feedback timing indicator field providing a value indicating the first slot. 
     
     
         4 . The wireless communication method according to  claim 1 , wherein the second DCI format includes a One-shot HARQ-ACK request field with a value of 1. 
     
     
         5 . The wireless communication method according to  claim 1 , wherein the second DCI format comprises a PDSCH group index field indicating a same PDSCH group index as the first PDSCH. 
     
     
         6 . The wireless communication method according to  claim 1 , wherein the second DCI format comprises a feedback request for both PDSCH groups corresponding to the first DCI format and the second DCI format. 
     
     
         7 . The wireless communication method according to  claim 5 , wherein the UE is provided with pdsch-HARQ-ACK-Codebook=enhancedDynamic-r16. 
     
     
         8 . The wireless communication method according to  claim 1 , wherein the second PDSCH is a Semi-Persistent Scheduling (SPS) PDSCH. 
     
     
         9 . The wireless communication method according to  claim 1 , wherein the PUCCH or the PUSCH is assigned by the second DCI format. 
     
     
         10 . The wireless communication method according to  claim 1 , wherein the second PDSCH is configured by a higher layer. 
     
     
         11 . The wireless communication method according to  claim 1 , wherein the first DCI format comprises a PDSCH-to-HARQ_feedback timing indicator field providing an inapplicable value. 
     
     
         12 . A User Equipment (UE), comprising:
 a memory having computer program stored thereon; and   a processor configured to invoke and run the computer program whereby the UE is operative to:
 detect a first Downlink Control Information (DCI) format; 
 receive a first Physical Downlink Shared CHannel (PDSCH) scheduled by the first DCI format; 
 detect a second DCI format, the second DCI format being detected after the first DCI format; 
 receive a second PDSCH, the second PDSCH being received after the first PDSCH; and 
 transmit Hybrid Automatic Repeat request-ACKnowledgement (HARQ-ACK) information corresponding to the first PDSCH in a Physical Uplink Control CHannel (PUCCH) or a Physical Uplink Shared CHannel (PUSCH) in a first slot indicated by the second DCI format. 
   
     
     
         13 . The UE according to  claim 12 , wherein the UE is further operative to:
 transmit HARQ-ACK information corresponding to the second PDSCH in a second slot, wherein the first slot is not later than the second slot.   
     
     
         14 . The UE according to  claim 12 , wherein the second DCI format includes a One-shot HARQ-ACK request field with a value of 1. 
     
     
         15 . The UE according to  claim 12 , wherein the second DCI format comprises a PDSCH group index field indicating a same PDSCH group index as the first PDSCH. 
     
     
         16 . The UE according to  claim 12 , wherein the second DCI format comprises a feedback request for both PDSCH groups corresponding to the first DCI format and the second DCI format. 
     
     
         17 . The UE according to  claim 12 , wherein the second PDSCH is a Semi-Persistent Scheduling (SPS) PDSCH. 
     
     
         18 . The UE according to  claim 12 , wherein the PUCCH or the PUSCH is assigned by the second DCI format. 
     
     
         19 . The UE according to  claim 12 , wherein the second PDSCH is configured by a higher layer. 
     
     
         20 . The UE according to  claim 12 , wherein the first DCI format comprises a PDSCH-to-HARQ_feedback timing indicator field providing an inapplicable value.